There are many terms used to describe pressure ulcers: pressure sores, decubitus ulcers, bedsores, and pressure necrosis or ischaemic ulcers. Essentially they all describe damage to the patient's skin and underlying tissue. The nursing literature abounds with information about the risk, grading, prevention and treatment of pressure ulcers. These ulcers are a problem in hospital and long term care facilities, and are a major cause of morbidity. In the hospital setting they contribute to an extended length of stay and by doing so 'block' the bed for use by another patient. The ulcers are difficult to treat, are an ongoing cause for pain and discomfort for the patient and can be a strain on hospital finances. Pressure ulcers are not unique to modern times, as they have been discovered on the remains of an Egyptian mummified body (Armstrong & Bortz 2001). This would suggest that the problem dates back to the Pharoahs, and has continued to be a challenging problem throughout the centuries (Bridel 1992). The escalating costs of treating these ulcers today, has brought about an emphasis on the risk factors, prevention and the appropriate interventions, rather than an acceptance of these ulcers as a tolerable ondition (Bridel 1992). In the operating room, nurses are faced with unique challenges when caring for their patients. This is due to difficulty in caring for patients under the influence of the anaesthesia required for surgery, long periods of forced immobility and the inability of the patient to perceive pain and discomfort from the pressure of the hard surface of the operating room table. These problems are increased by nurses' inability to gain access to the patient because of the sterile drapes required to cover the patient for surgery. Armstrong and Bortz (2001) present information from one study in which it is stated that surgical patients have 90% greater chance of developing pressure ulcers than medical patients. One reason for this may be due to the limited information available in regard to the most effective support surface to place on top of the operating room table. This gap in information is problematic for operating room nurses as it limits their ability to select the most effective item of equipment, and determine if the chosen equipment reduces pressure on tissue intra- operatively. The most effective operating room table mattress used and the skills and knowledge of the operating room nurse about the aetiology and prevention of pressure ulcer prevention, are important aspects of nursing care and can influence patient outcomes. The potential for complications to occur may be dependent on single or combined factors such as the patient's age, disease processes, nutritional status and mobility. Preparatory and supportive nursing interventions for surgical procedures based on best available evidence, nursing experience and patient preference, can reduce the incidence of pressure ulcer development in the perioperative environment. This doctoral portfolio contains four separate sections related and linked together by a common theme - pressure ulcer prevention in the perioperative environment. This first section of the portfolio situates the topic and provides a brief overview of the portfolio. The second section is a critical review of the literature pertaining to the most commonly used operating room table mattresses, and the effectiveness of these mattresses in the prevention of pressure ulcer development. This review highlighted a lack of quality research in this area, and while many evaluations have been undertaken to determine the effectiveness of perating room table mattresses, the results are contradictory concerning the patients, exposures and interventions. Because of issues related to the methodological quality of published research in this area a systematic review using meta- analysis was not possible rather a critical review of the research literature is used. The third section of the portfolio reports on a hermeneutic ethnography of the perceived skills and knowledge of nurses in the prevention of pressure ulcer development in the perioperative environment. This study was designed to determine if pressure ulcer prevention forms an aspect of the everyday practice of perioperative nurses. This review has highlighted the need for operating room nurses to review practices when caring for patients in the perioperative environment particularly in respect of pressure ulcer prevention. The fourth and final section of the portfolio summarises the research and provides recommendations for nursing practice and further research in the area of pressure ulcer prevention in the perioperative environment. / Thesis (D.Nurs.)--Department of Clinical Nursing, 2004.

published_or_final_version / Zoology / Master / Master of Philosophy

There are many terms used to describe pressure ulcers: pressure sores, decubitus ulcers, bedsores, and pressure necrosis or ischaemic ulcers. Essentially they all describe damage to the patient's skin and underlying tissue. The nursing literature abounds with information about the risk, grading, prevention and treatment of pressure ulcers. These ulcers are a problem in hospital and long term care facilities, and are a major cause of morbidity. In the hospital setting they contribute to an extended length of stay and by doing so 'block' the bed for use by another patient. The ulcers are difficult to treat, are an ongoing cause for pain and discomfort for the patient and can be a strain on hospital finances. Pressure ulcers are not unique to modern times, as they have been discovered on the remains of an Egyptian mummified body (Armstrong & Bortz 2001). This would suggest that the problem dates back to the Pharoahs, and has continued to be a challenging problem throughout the centuries (Bridel 1992). The escalating costs of treating these ulcers today, has brought about an emphasis on the risk factors, prevention and the appropriate interventions, rather than an acceptance of these ulcers as a tolerable ondition (Bridel 1992). In the operating room, nurses are faced with unique challenges when caring for their patients. This is due to difficulty in caring for patients under the influence of the anaesthesia required for surgery, long periods of forced immobility and the inability of the patient to perceive pain and discomfort from the pressure of the hard surface of the operating room table. These problems are increased by nurses' inability to gain access to the patient because of the sterile drapes required to cover the patient for surgery. Armstrong and Bortz (2001) present information from one study in which it is stated that surgical patients have 90% greater chance of developing pressure ulcers than medical patients. One reason for this may be due to the limited information available in regard to the most effective support surface to place on top of the operating room table. This gap in information is problematic for operating room nurses as it limits their ability to select the most effective item of equipment, and determine if the chosen equipment reduces pressure on tissue intra- operatively. The most effective operating room table mattress used and the skills and knowledge of the operating room nurse about the aetiology and prevention of pressure ulcer prevention, are important aspects of nursing care and can influence patient outcomes. The potential for complications to occur may be dependent on single or combined factors such as the patient's age, disease processes, nutritional status and mobility. Preparatory and supportive nursing interventions for surgical procedures based on best available evidence, nursing experience and patient preference, can reduce the incidence of pressure ulcer development in the perioperative environment. This doctoral portfolio contains four separate sections related and linked together by a common theme - pressure ulcer prevention in the perioperative environment. This first section of the portfolio situates the topic and provides a brief overview of the portfolio. The second section is a critical review of the literature pertaining to the most commonly used operating room table mattresses, and the effectiveness of these mattresses in the prevention of pressure ulcer development. This review highlighted a lack of quality research in this area, and while many evaluations have been undertaken to determine the effectiveness of perating room table mattresses, the results are contradictory concerning the patients, exposures and interventions. Because of issues related to the methodological quality of published research in this area a systematic review using meta- analysis was not possible rather a critical review of the research literature is used. The third section of the portfolio reports on a hermeneutic ethnography of the perceived skills and knowledge of nurses in the prevention of pressure ulcer development in the perioperative environment. This study was designed to determine if pressure ulcer prevention forms an aspect of the everyday practice of perioperative nurses. This review has highlighted the need for operating room nurses to review practices when caring for patients in the perioperative environment particularly in respect of pressure ulcer prevention. The fourth and final section of the portfolio summarises the research and provides recommendations for nursing practice and further research in the area of pressure ulcer prevention in the perioperative environment. / Thesis (D.Nurs.)--Department of Clinical Nursing, 2004.

Úlceras por Pressão (UPP) são áreas de necrose isquêmica em partes moles, causadas por uma pressão prolongada maior que a capilar, com ou sem cisalhamento, relacionada à postura e frequentemente localizada junto a uma proeminência óssea em indivíduos com predisposição clínica. Os fatores extrínsecos pressão, fricção, cisalhamento, umidade e alterações de temperatura são relacionados à engenharia biomédica e decorrem da interação do paciente com a superfície de suporte. Já os intrínsecos, notadamente relacionados às condições de saúde, envolvem o desequilíbrio nutricional e as afecções clínicas, tanto as que diminuem a oxigenação tecidual, como as que implicam no comprometimento da mobilidade. Por ser mais prevalente entre os idosos e por decorrer de múltiplas causas e mecanismos patogênicos, as UPP são classificadas como uma Síndrome Geriátrica. Embora associada principalmente a gerontes, o aporte financeiro empregado no grupo de feridas crônicas, como as UPP, remonta o 3o maior bloco de gastos em saúde no mundo. As UPP são frequentes em pacientes hospitalizados, porém ultrapassam este ambiente, havendo expressiva incidência em residentes de Instituições de Longa Permanência para Idosos (ILPIs). No Brasil, as ILPIs são órgãos sociais, o que gera uma lacuna legal quanto à responsabilidade clínica sobre seus residentes e, consequentemente, sobre as afecções que os acometem, particularmente as UPP. Estas feridas são passíveis de prevenção, destacando-se então o cuidador de idosos, ocupação que vem aumentando em número e importância com o envelhecimento da população e que, no entanto, nem sempre é devidamente instruído. Por meio de uma vasta revisão de literatura, esta dissertação objetivou pontuar os fatores relevantes envolvidos na patogenia das UPP, além das especificidades do indivíduo idoso e do ambiente das ILPIs. Neste contexto, o produto final elaborado foi um guia para prevenção de UPP em ILPIs. / Pressure Ulcers (PU) are areas of localized soft tissue ischemic necrosis caused by prolonged pressure higher than the capillary pressure with or without shear, related to posture which usually occurs over a bony prominence in individual with certain clinical susceptibilities. Extrinsic factors – such as pressure, friction and shear, moisture and temperature changes – are related to biomedical engineering and come from the interaction patient-surface. On the other hand, intrinsic factors are related to health conditions and correspond to nutritional imbalance and/or conditions that decrease tissue oxygenation or impair mobility. Since it features different pathogenic mechanisms and it is more prevalent among the elderly, the PU group is classified as a geriatric syndrome. Worldwide, PU are estimated to be the 3rd largest consumer of resources, plus the social burden and consequences of this condition. PU are quite common in hospitals, however there are several cases among the elderly living in Long-Term Care Facilities (LTCFs). In Brazil, these institutions are supported by social organizations, what produces legal gaps with respect to the residents’ clinical responsibility, and reduces the chances of preventing avoidable diseases as PU. The number of elderly caregivers tends to grow accordingly to the population ageing, creating a window of opportunity for continued education of this group of workers. Through an extensive literature review, this thesis aimed to highlight the relevant findings of the different factors involved in PU pathogenesis as well as to ascertain the particularities of elderly individuals and the specific environment of LTCFs. The final product is a PU prevention guide suitable to use in Brazilian long-term care facilities.

Úlceras por Pressão (UPP) são áreas de necrose isquêmica em partes moles, causadas por uma pressão prolongada maior que a capilar, com ou sem cisalhamento, relacionada à postura e frequentemente localizada junto a uma proeminência óssea em indivíduos com predisposição clínica. Os fatores extrínsecos pressão, fricção, cisalhamento, umidade e alterações de temperatura são relacionados à engenharia biomédica e decorrem da interação do paciente com a superfície de suporte. Já os intrínsecos, notadamente relacionados às condições de saúde, envolvem o desequilíbrio nutricional e as afecções clínicas, tanto as que diminuem a oxigenação tecidual, como as que implicam no comprometimento da mobilidade. Por ser mais prevalente entre os idosos e por decorrer de múltiplas causas e mecanismos patogênicos, as UPP são classificadas como uma Síndrome Geriátrica. Embora associada principalmente a gerontes, o aporte financeiro empregado no grupo de feridas crônicas, como as UPP, remonta o 3o maior bloco de gastos em saúde no mundo. As UPP são frequentes em pacientes hospitalizados, porém ultrapassam este ambiente, havendo expressiva incidência em residentes de Instituições de Longa Permanência para Idosos (ILPIs). No Brasil, as ILPIs são órgãos sociais, o que gera uma lacuna legal quanto à responsabilidade clínica sobre seus residentes e, consequentemente, sobre as afecções que os acometem, particularmente as UPP. Estas feridas são passíveis de prevenção, destacando-se então o cuidador de idosos, ocupação que vem aumentando em número e importância com o envelhecimento da população e que, no entanto, nem sempre é devidamente instruído. Por meio de uma vasta revisão de literatura, esta dissertação objetivou pontuar os fatores relevantes envolvidos na patogenia das UPP, além das especificidades do indivíduo idoso e do ambiente das ILPIs. Neste contexto, o produto final elaborado foi um guia para prevenção de UPP em ILPIs. / Pressure Ulcers (PU) are areas of localized soft tissue ischemic necrosis caused by prolonged pressure higher than the capillary pressure with or without shear, related to posture which usually occurs over a bony prominence in individual with certain clinical susceptibilities. Extrinsic factors – such as pressure, friction and shear, moisture and temperature changes – are related to biomedical engineering and come from the interaction patient-surface. On the other hand, intrinsic factors are related to health conditions and correspond to nutritional imbalance and/or conditions that decrease tissue oxygenation or impair mobility. Since it features different pathogenic mechanisms and it is more prevalent among the elderly, the PU group is classified as a geriatric syndrome. Worldwide, PU are estimated to be the 3rd largest consumer of resources, plus the social burden and consequences of this condition. PU are quite common in hospitals, however there are several cases among the elderly living in Long-Term Care Facilities (LTCFs). In Brazil, these institutions are supported by social organizations, what produces legal gaps with respect to the residents’ clinical responsibility, and reduces the chances of preventing avoidable diseases as PU. The number of elderly caregivers tends to grow accordingly to the population ageing, creating a window of opportunity for continued education of this group of workers. Through an extensive literature review, this thesis aimed to highlight the relevant findings of the different factors involved in PU pathogenesis as well as to ascertain the particularities of elderly individuals and the specific environment of LTCFs. The final product is a PU prevention guide suitable to use in Brazilian long-term care facilities.